From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: Date: Wed, 5 Sep 2007 16:16:16 -0500 From: "Noah Diewald" To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu> Subject: Re: [9fans] smp issues with dual core cpu? In-Reply-To: <82c890d00709051349h26c91347q742d73ac3717c10e@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <82c890d00709051349h26c91347q742d73ac3717c10e@mail.gmail.com> Topicbox-Message-UUID: b8ab6146-ead2-11e9-9d60-3106f5b1d025 I have this same problem on a dual cpu machine. Things run for a while and then hang. In rio, if a window hangs, opening a new window, if rio itself hasn't already hung, will give me a working shell that will eventually hang but works for a while. Putting *nomp= back in gives me a working system. On 9/5/07, Gabriel Diaz wrote: > hello > > i have a dual core 2 (intel dual core 2 6600) cpu, when booting > without *nomp= the kernel prints both cpu cores but get hanged > randomly, sometimes it runs for a while and i can run commands, > sometimes it doesn't start the shell. Ctrl+tt keystrokes work. > > i have disabled usb, network card (rtl), serial and parallel ports, > audio, and all the devices the bios let me disable, but the problem is > still here. > > timesync is not running on the machine, and cron seems to behave correctly. > > when using one core it work as expected. > > any hints about what could be happening? i have tested plan9 time ago > on dual core 2 machines and worked fine with both cores enabled. > > the booting messages seems normal (the same as when booting with a > single core enabled but the cpu1: line) i didn't run diff on them. . . > > thanks > > gabi >